splitter vs lumper

splitter and lumper both are nouns.

Word	Noun	Adjective	Verb	Adverb
splitter	Yes	No	No	No
lumper	Yes	No	No	No

splitter (noun)	lumper (noun)
a taxonomist who classifies organisms into many groups on the basis of relatively minor characteristics	a taxonomist who classifies organisms into large groups on the basis of major characteristics
a worker who splits fish and removes the backbone	a laborer who loads and unloads vessels in a port
a laborer who splits logs to build split-rail fences